Current Thoracic Surgery
2020 , Vol 5 , Issue 3
A mass-forming extramedullary hematopoiesis case mimicking mediastinal neoplasia
1Department of Pathology, University of Health Sciences, Şişli Hamidiye Etfal Health Application and Research Center, Istanbul, Turkey2Department of Thoracic Surgery, University of Health Sciences, Şişli Hamidiye Etfal Health Application and Research Center, Istanbul, Turkey DOI : 10.26663/cts.2020.00028 Viewed : 3499 - Downloaded : 1271 Extramedullary hematopoiesis (EMH) is a condition that usually coexists with hematological disorders and rarely causes mass formation. It can occur anywhere in the body, but very rarely becomes a tumorlike mass in the posterior mediastinum and paravertebral region. A 41-year-old female patient presented with respiratory distress. Radiologically, multiple large mass lesions were detected in the posterior mediastinum, localized bilaterally at paravertebral regions. Diagnostic studies with transthoracic biopsy specimen were showed that the mass lesion was consisting of myelocytes, lymphocytes, erythrocytes and megakaryocytes, so the case was reported as EMH. The case was presented to make a differential diagnosis, because it mimics solid neoplasms at unusual localizations, and may accompany hematological disorders. Keywords : extramedullary hematopoiesis, solid mass, posterior mediastinum